input.spin-button {
    padding-right:20px;		
    width:35px;
    background-color:white;
    background-repeat:no-repeat;	
    background-position:100% 0%;
    background-image:url(images/spinbtn_updn.gif);
}

input.spin-button.up {
    cursor:pointer;
    background-position:100% -18px;		
}
input.spin-button.down {
    cursor:pointer;
    background-position:100% -36px;
}